Body mods that look good in the traditional sense are generally called plastic/cosmetic surgery. Breast implants, face lifts, hair implants, etc. are the same idea as body mods, just with the goal of achieving a more mainstream idea of beauty.
Because images like this are still relevant no matter how the cars are powered.
Running an electric car is obviously greener than running an ICE car, but producing one is most definitely not environmentally friendly. If we can reduce the number of vehicles on the road, including electric cars, that would go a long way to reducing carbon emissions.
There's also the case to be made around the environmental impact of (sub)urban sprawl, which generally comes about as a direct result of car dependency.
It's been surprising to see just how many pro-car users seem to lurk on these anti-car/pro-alternative transport communities.
Which would mean that you would also be speeding, since e-bikes in the UK are required by law to be capped at 15.5mph (technically 25kph).
From the Welsh government's FAQ again: "The evidence from around the world is very clear – reducing speed limits reduces collisions and saves lives." The intended benefit is to reduc the risk of collisions and to reduce injuries in the case of collisions. Lowering the speed limit will result in both of those things, and so we will be seeing the intended benefit.
The FAQ in OP's link tells you that it is not all 30mph roads, but rather all restricted roads, with a link to a map of all 30mph roads that are staying 30mph as well as the option to see which restricted roads will change to 20mph. "Restricted Roads" is a classification of roads in law that is defined by the lamppost density, so this change won't affect larger and more rural roads where lampposts are more sparse.
I don't think it would be up to us to decide if it is acceptable or not. We don't ask the cow if they think it's okay that we take their milk, their skin, their meat. Likewise, I doubt a more advanced alien species would bother asking for our permission if they decided they had a use for us.
On a more philosophical point though, there's also the matter of sentience. As far as we're aware the animals we use for food, labour, etc. don't have the mental capacity to really understand the situation they find themselves in. They can't process and understand the fact that they are being used. As we are a species that can, the chances that we'd let another species, even one more advanced than us, exploit us without resisting are probably pretty low.
I know we're dealing with human aliens, but there is actually a thing called takotsubo cardiomyopathy, also known as "broken heart syndrome", where your heart weakens as a result of emotional trauma.
It is rarely fatal, but deaths have occurred as a result of it.
Legally speaking filtering is fine for both bicycles and motorcycles in the UK. I imagine if someone is the type to get mad at a motorcyclist doing this then they'd probably get mad at a cyclist too.
I will say that there's a massive size disparity between the two, with motorbikes capable of weighing 400kg while the average road bike is closer to 10kg. I know which one I would be more nervous about when I see it weaving by me.
What's funny is that it's only that way because of all the people driving rather than cycling. If the people who could get to where they're going without a car (bike/bus/train/whatever) used those alternative forms of transportation, then it would make the roads much clearer for the few people who actually need to drive (trades/emergency vehicles, etc.).
Both the total throughput and average speed of these roads would increase if more people were on bikes and buses. Unfortunately if it were to ever happen I fear people would just see the clearer roads and think, "Hey, the roads are clear now, I should drive again!" and we'd be right back to square one.
Public transport? Or cars. Some people on here may be militant about getting rid of all cars, but most of us aren't that extreme. We simply want to have the option to not use cars, which is currently not the case in many regions of the world.